Charred Oxheart Cabbage with Tarragon, Fish Sauce & Brown Butter

• 1 tablespoon olive oil
• ½ medium-size oxheart cabbage or white cabbage, outer leaves removed
• About

Heat the oil in a medium cast-iron or other heavy-bottomed skillet over medium heat. Place the halved cabbage cut sides down in the pan. Just leave it to cook for 10 to 15 minutes, until the underside has become beautifully charred.

Lower the heat somewhat, add half of the butter, and shake the pan in order to spread the butter under and all around the cabbage. Once the butter has melte